In a free market, which Nostr + Bitcoin for the first time truly is, the mental cost of subscriptions is higher:  
nostr:naddr1qvzqqqr4gupzp22rfmsktmgpk2rtan7zwu00zuzax5maq5dnsu5g3xxvqr2u3pd7qy88wumn8ghj7mn0wvhxcmmv9uqpzum4vfekxunfwp6xjmmww3jkzunn22ysst